Polymerizable composition for forming protective layer on photochromic article, photochromic article and eyeglasses

Abstract

Provided a polymerizable composition for forming a protective layer of a photochromic article including one or more types of (meth)acrylates and 70.0 mass % or more of an alicyclic bifunctional (meth)acrylate based on a total amount of the (meth)acrylates.

What is claimed is: 
     
         1 . A polymerizable composition,
 which is a polymerizable composition for forming a protective layer of a photochromic article, and   the composition comprises one or more types of (meth)acrylates, and 70.0 mass % or more of an alicyclic bifunctional (meth)acrylate based on a total amount of the (meth)acrylates.   
     
     
         2 . The polymerizable composition according to  claim 1 ,
 wherein the composition contains 30.0 mass % or more of the alicyclic bifunctional (meth)acrylate based on a total amount of the (meth)acrylates.   
     
     
         3 . The polymerizable composition according to  claim 1 ,
 wherein the composition contains 90.0 mass % or more of the alicyclic bifunctional (meth)acrylate based on a total amount of the (meth)acrylates.   
     
     
         4 . The polymerizable composition according to  claim 1 ,
 wherein the composition contains 30.0 mass % or more of the (meth)acrylate based on a total amount of the composition.   
     
     
         5 . The polymerizable composition according to  claim 1 ,
 wherein the composition contains 90.0 mass % or more of the (meth)acrylate based on a total amount of the composition.   
     
     
         6 . The polymerizable composition according to  claim 1 , further comprising
 a radical polymerization initiator.   
     
     
         7 . The polymerizable composition according to  claim 1 , further comprising
 a UV absorbing agent.   
     
     
         8 . A photochromic article, comprising:
 a photochromic layer containing a photochromic compound and   a protective layer which is a cured layer obtained by curing the composition according to  claim 1 .   
     
     
         9 . The photochromic article according to  claim 8 ,
 wherein the thickness of the protective layer is in a range of 10 to 45 μm.   
     
     
         10 . The photochromic article according to  claim 8 , further comprising a substrate. 
     
     
         11 . The photochromic article according to  claim 10 ,
 wherein the photochromic article includes the substrate the photochromic layer, the protective layer, and an organosilicon-based cured layer in that order.   
     
     
         13 . The photochromic article according to  claim 8 , which is a spectacle lens. 
     
     
         14 . The photochromic article according to  claim 8 , which is a visor of a sun visor. 
     
     
         15 . The photochromic article according to  claim 8 , which is a shield member of a helmet. 
     
     
         16 . Eyeglasses including the spectacle lens according to claim  12 .